Vacuum-bottle support.



F. E. CARLSON. I YACUUM BOTTLE SUPPORT.

APPUCATION men JAN. 14. I 15.

Patented June 15, 1915.

mm'm,

WIT VESSES" A TTORNEY.

rnnnnarcx canteen, on NEW BRITADLQONNECTICUT, ass 'eiv'on 'ro minivans,

CONNECTICUT, A conronario i or coii- FRARY & CLARK, on NEW BRITAIN,N'Ec'ncu'r.

Application filed January (ZZZ-whom it ma'y concern:

' Be it known thatI, 'FREDERIOK CA L- fson, a, citizen of the UnitedStates,

l0 sert 'a support or supports between the walls cause the glass with myinvention;

wall, its en s stand free and a resident of New Britain, county of Hartford, State ofConnecticut, have invented new and useful Improvements inVacuum- 'Bottl,e Supports, of which the following is a specification. aIn the manufacture [of .double-walled vacuum receptacles, it iscustomary ,to inso as to steady one fromthe other. to pre vent relativevibration whichw'ould tend to. to crack at .the" neck where the twobottles are sealed together to inclose thevacuum space. i

This invention relates to a new'form of support and its-combination withthe douj and after the supports have been introduced '30 between thesewalls the bottom of the outer bottle is closed in as indicated in dottedlines in Fig. 1.

A supportinade in accordance with my invention comprises a bar 5 ofresilient or spring metal curved from end to end. This bar is. locatedbetweenthe walls of. the vessel, its curvature being in the samedirection as the curvature of the walls of the vessel butbeing on alargerradius, so that while its centralortion lies against the innerofthe inner wall and adjacentto the outer the preferred embodiment of theinvention the ends of this bar are bent outwardly and back upon the barto form clips, as clearly shown in the drawings. Furthermore, toeliminate any path for heat conduction between the inner and outerwalls, a heat.non-- conducting material I is interposed between one ofthe walls and the most adjacent part of the support. For instance, asshown, the

the folded over ends of the bar and is heat insulating materialislwound' about in the form of a strip of insulating material such asasbestos paper, one end of a stripwall. In fact, in

vacuum-norms surroits,

1 Specification of Letters Patent. Patented June 15, R5915,

14, 1915. Serial No. 2,156.

being caughtin the clips which are formed by folding over the endsof-the bar; and so wound as tolie between the bar and'the outer wall.These supports, it will be noted, are comparatively short,' considerablyless than the semi-circumference of the bottles,

and are manufactured with such a curvature that they must'be sprungslightly in order to insert them between the walls. In this' way, andbecause the barsare curved in the" same general direction as'the wallsofthe I bottle, the supports exert alight spring action tending tospreadthe walls apart, and a plurality of thesupports are used'witli theresult that while the walls are not held rigidly they are.nevertheless'very efliciently supported, and any slight motion they mayhave, due to a Jar or'shock, is always backed up. and followed up by thespring action of the support. 'It is a material feature of thisinvention that the-curvature of'the support shall be in the samedireotionxas the curvature of 'thefwalls, since by this arrangement the;lightest and most delicate spring act on is to be. had. If the receptacle contains heated material these metallic supports are apt toexpand, and the fact that they'curve' in the same direction asthe wallsof the bottle leaves their ends free to move slightly under expansionwithout subjecting the'walls to undue pressure which would be theresult'if the'curvature were in a direction opposite to the curvature ofthe walls. 1

It is advisable to have the heatfnon-conducting material at theendsofthe support where it bears against the ,outer wall, since these arethe points which have such relative motion as there is, and the materialnot only acts as aheat non-conductor, but also as'a cushioning pad.

I am aware ofthe structures disclosed inthe British patent to Chassel1561/1911, and donot wish my invention any of the structures thereillustrated. f i feature of this invention to which-it is desired todirect-particular attention is the relative curvature of the support andthe bottle walls, and the points of. contact between thesupport and thebottle walls.

' I claim as my invention- 1. The combinationwith a double-walled vacuuminsulatedvessel of fragile material,

of means for spacing and supporting the to be understood as claiming aswallsfrom one another, said means compris mg a resilient strip ofmetalarranged cir-.'

' acuum insiatedvessel of fragile material,

of means for spacing and supportingfthe :walls from one anotherfsaldmeans cmti'on against the inner wall cumferentially between the walls,said strip curved from end to end in the general di- 1 ection of-thecurvature of the walls but'on alarger radius, bearing at its central porand at its end portions against-the outer wall, and heat insulatingmaterial interposed between'one wall andthe'part of the-support bearingtnereagamst. V a

The combination with a double-walled prising a resilient strip of metalarranged i circumferentially betweenthe walls of the I vessel, thecurvature of said-strip being on a 2 larger radiusbut in the samegeneral direco I tion' as the curvature of said walls, the ends, of saidstrip being bent backwardly upon itself'oppo'site to the direction ofcurvature,

the central against. the inner wall, the ends of said strip portion ofsaid-strip bearing bearingagainst the outer Wall, and, heat insulatingmaterial wound about the bent-back end'por'tions of the strip andinterposed between it and the outerwall.

The combination-with a double-walled vacuum insulated-vessel offragilematerial,

of means for spacing 'and supporting the wallsfrom one another, saidmeans comprising-a resilient, strip ofmetal arranged circumferentiallybetween the walls and conslightly,

" with respect to the radial line at tacting at its central the innerwall, the portions of saidstrip a't'eithe'r' side point bent'inwardly'the ends ofsaid strip terminating adjacent the outer ava-ll,

of its central contacting and heat non-conducting material attachedtotheends of said strips and contacting with the outer wall at spaced points.

- 4; The combination with a doublewalled f vacuum insulatedvessel offragile material, of means for spacing and supporting said walls fromone another, said means comprising heat non-conducting material engagingthe 'outer Wall at spaced'points, and a resilient lnwardly' bent"stripihaving its ends ,c0n-

ranged transversely in the'space between said Walls and contacting atits central portion with said inner wall, and at its ends with saidouter wall, the end portions of said strip at either side of itscenterbeing arranged at not more than a right angle WVitnesses:

S. H.'RAYM0ND, B. W; CLARK.

FREDERICK E. C ARLS ON.

usin

its center. f

